release-26.3: roachtest: follower-reads/survival=region/locality=global/reads=bounded-staleness failed

**Note:** This build has runtime assertions enabled. If the same failure was hit in a run without assertions enabled, there should be a similar failure without this message. If there isn't one, then this failure is likely due to an assertion violation or (assertion) timeout.

roachtest.follower-reads/survival=region/locality=global/reads=bounded-staleness [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21492055?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21492055?buildTab=artifacts#/follower-reads/survival=region/locality=global/reads=bounded-staleness) on release-26.3 @ [2388f34e6ec51df924f33c2e6231de4a3e9cd2f8](https://github.com/cockroachdb/cockroach/commits/2388f34e6ec51df924f33c2e6231de4a3e9cd2f8):

Failed with:

```
(follower_reads.go:390).runFollowerReadsTest: failed to get follower read counts: Get "https://10.91.48.91:26258/_status/vars": EOF
test artifacts and logs in: /artifacts/follower-reads/survival=region/locality=global/reads=bounded-staleness/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0001 | | 10.91.96.63 |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0002 | | 10.91.97.33 |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0003 | | 10.91.97.30 |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0004 | | 10.91.128.72 |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0005 | | 10.91.48.91 |
| teamcity-21492055-1788154532-74-n6cpu4-geo-0006 | | 10.91.48.90 |

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=false
- fs=ext4
- localSSD=true
- metamorphicLeases=default
- runtimeAssertionsBuild=true
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21492055/follower-reads-survival-region-locality-global-reads-bounded-st/1788172378440/1788173095856)

See: [Datadog Logs](https://us5.datadoghq.com/logs?query=service%3Aroachtest+%40cluster%3Ateamcity-21492055-1788154532-74-n6cpu4-geo&from_ts=1788172378440&to_ts=1788173095856&live=false&storage=flex_tier)

/cc @cockroachlabs/kv-triage

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*follower-reads/survival=region/locality=global/reads=bounded-staleness.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-67680